作者:P. Häussinger、G. Kresze
DOI:10.1016/0040-4020(78)88105-8
日期:1978.1
Z- as well as E-isomers of 1,2-diarylbutadienes undergo Diels-Alder reactions with nitrosobenzenes regiospecifically, but the adducts have different structures (3 or 4, respectively) in both cases. From kinetic results it is concluded that the somewhat anomalous cycloaddition of the E-isomers is facilitated and directed by the intermediate formation of a CT-complex.
1,2-二芳基丁二烯的Z-异构体和E-异构体与亚硝基苯在区域上发生Diels-Alder反应,但在两种情况下加合物的结构不同(分别为3或4)。从动力学结果可以得出结论,CT络合物的中间形成促进了E异构体的反常环加成反应。